MOD29E1D and MYD29E1D Local Sea Ice Attributes, Version 5

Local attributes describe the data and provide summary information about the results of the sea ice algorithm. Two types of local attributes are reported: Hierarchical Data Format (HDF) predefined and custom local attributes.

HDF Predefined Local Attributes

Attribute Name	Reserved Label(s)	Definition	Sample Value
Label	long_name	Long name of the Scinetific Data Set (SDS).	Estimated sea ice surface temperature 4 km North Pole grid
Unit	units	International System of Units (SI) of the data. This attribute may or may not be used.	degree_Kelvin
Format	format	How the data should be viewed in Fortran format notation	f4.1
Coordinate system	coordsys	Coordinate system to use for the data	cartesian
Range	valid_range	Maximum and minimum values within a selected data range	22320,31320
Fill Value	_FillValue	Data used to fill gaps in the swath	7
Calibration	scale_factor	Value by which each data element is to be multiplied¹	0.01
	scale_factor_err	Error induced by scaling¹	0.0
	add_offset	Value to add to each array element¹	0.0
	add_offset_err	Error induced by offset¹	0.0
	calibrated_nt	HDF data types of the calibrated data¹	23

¹ These values are only used for Ice Surface Temperature (IST).

Custom Local Attributes for the Sea Ice by Reflectance NP Field

Attribute Name	Definition	Sample Value
Key	Key to the meaining of the coded integers within the SDS.	Value Description 0 = missing data missing data 1 = no decision no decision 11 = night darkness, terminator, or polar 25 = land land 37 = inland water lake or inland water 39 = ocean ocean 50 = cloud cloud obscured 200 = sea ice   253 = no input tile expected   254 = non-production mask

Custom Local Attributes for the Ice Surface Temperature NP Field

Attribute Name	Definition	Sample Value
Key	Key to the meaining of the coded integers within the SDS.	Value Description 0.0 = missing missing data 1.0 = no decision no decision 5.0 = non-production mask   7.0 = tile fill   8.0 = no input tile expected   25.0 = land land 37.0 = inland water lake or inland water 50.0 = cloud cloud obscured

Custom Local Attributes for the Sea Ice by Reflectance SP Field

Attribute Name	Definition	Sample Value
Key	Key to the meaining of the coded integers within the SDS.	Value Description 0 = missing data missing data 1 = no decision no decision 11 = night darkness, terminator, or polar 25 = land land 37 = inland water lake or inland water 39 = ocean ocean 50 = cloud cloud obscured 200 = sea ice   253 = no input tile expected   254 = non-production mask

Custom Local Attributes for the Ice Surface Temperature SP Field

Attribute Name	Definition	Sample Value
Key	Key to the meaining of the coded integers within the SDS.	Value Description 0.0 = missing missing data 1.0 = no decision no decision 5.0 = non-production mask   7.0 = tile fill   8.0 = no input tile expected   25.0 = land land 37.0 = inland water lake or inland water 50.0 = cloud cloud obscured